Final answer:
The correct answer is option d. The limbic system is the key structure in the brain for regulating emotional responses according to the Cannon-Bard theory of emotion, particularly the amygdala within the system that plays a crucial role in processing emotions like fear.
Step-by-step explanation:
According to the Cannon-Bard theory of emotion, the brain structure that is vital for physiological responses to emotion is the limbic system. The limbic system is responsible for regulating emotion, as well as behaviors related to fear and motivation. It includes the thalamus, hypothalamus, hippocampus, and the amygdala. Importantly, the amygdala, located in the medial region of the temporal lobe, plays a crucial role in processing emotional information, particularly that of fear. Simply put, the correct answer to the question is (D) The limbic system.
The cerebellum, mentioned in the original question, is responsible for coordination during movement, but not directly tied to the emotional response. The frontal lobe and the left hemisphere, although involved with different aspects of processing emotions and cognitions, are not the primary centers as suggested by this theory. The temporal lobe houses important parts of the limbic system, like the amygdala, but in the context of the Cannon-Bard theory, it is the system as a whole, not just the temporal lobe, that is highlighted.